Plate boundaries

Question 1

Plates moving towards each other

Answer 1

Destructive

Question 2

Plates moving away from each other

Answer 2

Constructive

Question 3

Plates moving parallel to each other

Answer 3

Conservative

Question 4

Oceanic crust

Answer 4

Low density of rock, mainly basalt, thin, newly created

Question 5

Continental crust

Answer 5

High density of rock, mainly granite, thick, old

Question 6

Mantle convection (convection currents)

Answer 6

Radioactive elements in the core of the Earth decay which produce a lot of ​thermal energy​. This causes the lower mantle to heat up and rise, as the magma rises it cools down and becomes more dense and begins to sink back down to the core. These are ​convection currents​. These convection currents push the plates

Question 7

Slab pull

Answer 7

Old oceanic crust (which is the most dense plate) will submerge into the mantle. This pulling action drags the rest of the plate with it